Multi-Barrel Rotary Toy Machine Gun Powered by Compressed Liquefied Gas

ABSTRACT

Disclosed is a multi-barrel rotary toy machine gun powered by compressed liquefied gas, which relates to the technical field of a replica toy machine gun, comprising: a grip assembly (1), a gun body assembly (2), and a barrel assembly (3), which are successively connected, wherein a magazine assembly (4) for loading a plurality of BB balls (5) and continuously pushing the BB balls (5) into the gun body assembly (2) via an elastic thrusting device is inserted inwardly along an entrance of the gun body assembly (3). The internal space of the barrel assembly is sufficiently utilized, which innovatively reforms the space of the central barrel of the barrel assembly to a front-mount magazine and thus significantly increases the magazine space; as such, a considerable amount of BB balls may be loaded at a single time, which significantly improves user experience and increases fun of playing.

FIELD

Embodiments of the present disclosure generally relate to a replica toy machine gun with a working principle imitating that of a multi-barrel rotary machine gun, and more particularly relate to a multi-barrel rotary toy machine gun powered by compressed liquefied gas.

BACKGROUND

Airsoft guns, also referred to as light-pellet air guns or BB guns, are generally replica weapons made by plastics or metals, which shoot spherical projectiles (colloquially “BB balls”) with a diameter of 6 mm or 8 mm. Different from real guns or heavy-pellet air guns, the light-projectile air guns shoot small and light-weight BB balls based on a pneumatic compression principle. Currently, most countries have statutory regulations on airsoft guns to limit their initial speeds and kinetic energy (Joule). In the case of legal use, compliance with rules on safety use, and wearing basic protective gears, airsoft guns are very safe to use in survival games.

Most conventional toy air guns are designed to be powered by a spring or compressed air to fire BB balls. The BB balls are usually loaded in a space-limited magazine, where only a few BB balls can be loaded at a time. As such, when playing a survival game with a replica toy machine gun, a player has to frequently reload the magazine for next round of firing, which is not only very inconvenient, but also deteriorates fun of the game, thereby offering a poor player experience. A replica toy machine gun, the working principle of which imitates that of a multi-barrel rotary machine gun, alleviates the problem to a certain extent. For example, some market-available model of toy machine gun imitates a Gatling auto-cannon principle (i.e., a principle of rotating barrels to fire), which utilizes a set of transmission mechanism to enable multiple barrels to rotate about a common shaft, thereby implementing continuous fire. However, such a replica Gatling machine gun has a too heavy gun body; besides, the rear loading manner as adopted greatly limits the magazine space as well as the single-time ammo load capacity; therefore, it cannot satisfy the need of intensive and continuous firing at a single time. Besides, a safety device for the conventional toy machine gun mentioned above is relatively distant from the firing trigger, such that it is inconvenient to manipulate; besides, the safety device cannot be auto-reset to lock the trigger in response to an operation of ceasing fire so as to avoid accidental firing. In view of the above, it is indeed necessary to provide a novel replica toy machine gun which enables loading of a large amount of BB balls (e.g., more than 2,000 BB balls) at a single time, and a safety device of which is convenient to manipulate and may be auto-reset to lock a trigger.

SUMMARY

An object of the present disclosure is to provide a multi-barrel rotary toy machine gun powered by compressed liquefied gas so as to solve the problems that conventional toy air guns cannot be loaded with much BB balls at a single time and a safety device thereof cannot be auto-reset to lock a trigger.

To solve the technical problems above, an embodiment of the present disclosure provides a multi-barrel rotary toy machine gun powered by compressed liquefied gas, comprising a grip assembly, a gun body assembly, and a barrel assembly, which are successively connected, wherein a magazine assembly for loading a plurality of BB balls and continuously pushing the BB balls into the gun body assembly via an elastic thrusting device is inserted inwardly along an entrance of the gun body assembly.

Further, the magazine assembly comprises a magazine which may accommodate a plurality of BB balls and is disposed parallel to the gun body assembly, and a loading entrance mechanism which is embedded at an entrance of the magazine and may continuously push the BB balls loaded in the magazine towards the grip assembly.

Preferably, in the technical solution above, the loading entrance mechanism comprises a sealing cover, a connecting cylinder, an abutting spring, and a push block, which are successively arranged inwardly along the entrance of the barrel assembly; the abutting spring is disposed between the connecting cylinder and the push block, one end of the abutting spring pressing against the connecting cylinder, while the other end thereof being fixedly connected to the push block; one end, which is distant from the abutting spring, of the push block presses against the BB balls loaded in the magazine; and the sealing cover is fixedly connected at the entrance of the magazine and abuts against or is connected to the end, which is distant from the abutting spring, of the connecting cylinder.

Preferably, in the technical solution above, the barrel assembly comprises barrels which may fire, one by one in succession, the BB balls ejected out from inside the magazine assembly along a rectilinear direction; the barrels are provided in four; the respective barrels are arranged annularly along a centerline of the gun body assembly, a centerline of the magazine assembly being arranged to coincide with the centerline of the gun body assembly.

Preferably, in the technical solution above, the grip assembly is arranged upside down; on the outer side of the grip assembly is provided a safety key which may change a locked state of a trigger; the trigger is movably disposed at an inner side of the grip assembly to control self-rotation of the gun body assembly, and is arranged adjacent to the safety key.

Preferably, in the technical solution above, the gun body assembly is provided with a gas storage device which may supply an aerodynamic force to push the BB balls out of the barrel assembly, wherein a liquefied gas cylinder is mounted in the gas storage device; a tail part of the gun body assembly is encircled into a gasification chamber which may gasify the liquefied gas in the liquefied gas cylinder, the liquefied gas cylinder being in communication the gasification chamber via an airway tubing, and the gasification chamber communicating with the barrel assembly via the airway tubing.

Preferably, in the technical solution above, a lifting yoke for being lifted and used in cooperation with the grip assembly is provided at a middle position of the barrel assembly, the lifting yoke being disposed at an upper portion of the barrel assembly and fixedly connected to a side portion of the gun body assembly.

Preferably, in the technical solution above, the gun body assembly comprises a driving device for driving the barrel assembly to self-rotate and a firing device configurable for pushing the BB balls inside the magazine into the gun body assembly and causing the BB balls to make a rectilinear motion inside the barrel assembly to the outside, the driving device and the firing device being arranged adjacently in parallel.

Preferably, in the technical solution above, the driving device comprises a driving motor configurable for providing a power source for driving the barrel assembly to self-rotate, a motor fixing base for fixing the driving motor, and a driving gear connected to an output shaft of the driving motor and capable of driving the barrel assembly to self-rotate, and start/stop of the driving motor is controlled by a trigger on the grip assembly.

Preferably, in the technical solution above, the firing device comprises a cylindrical stationary cylinder, a rotating cylinder disposed in the stationary cylinder and engaged with the driving gear, and a magazine fixing frame and a barrel fixing base which are provided at two ends of the rotating cylinder, respectively, for fixing the barrel assembly; the other end of the barrel fixing base is in pressing-against connection with a cam disc, one end face of the cam disc is inwardly recessed with a spiral groove fitted to the barrel assembly, and the other end face of the cam disc is in sealing connection with a sealing disc; the cam disc and the sealing disc are hermetic therebetween to form the gasification chamber.

The present disclosure offers the following beneficial effects: by inserting a magazine assembly inwardly along the entrance of the barrel assembly, the internal space of the barrel assembly is sufficiently utilized, which innovatively reforms the space of the central barrel of the barrel assembly to a front-mount magazine and thus significantly increases the magazine space; as such, a considerable amount of BB balls may be loaded at a single time, which significantly improves user experience and increases fun of playing. Additionally, the safety device of the toy machine gun according to the present disclosure is arranged at a back portion of the handle, such that the safety device self-locks the trigger in a normal state and when firing, it is only needed to grip the handle correctly by hand to depress the safety switch to unlock the trigger, and then the trigger may be pulled to fire; when the manipulator's hand leaves the handle, the safety device is auto-reset to lock the trigger. The present disclosure creatively overcomes the issues that a conventional safety device needs to be opened in advance when firing and the safety device thereof cannot be auto-reset to lock the trigger; in this way, the present disclosure may simplify firing actions and reduce accidental firing. Further, the toy machine gun according to the present disclosure provides a liquefied gas gasification chamber at the tail of the rotary barrel assembly, which may increase the gasification space for the liquefied gas while overcoming the insufficient pressure of the liquefied gas upon continuous firing. An overload protection circuit is provided to the driving motor, such that power supply to the motor will be interrupted in the case of overload, while the load will restore normal after power interruption. A dynamic braking circuit is mounted to the driving motor of the toy machine gun, which offers an emergent braking effect after cessation of the motor, thereby preventing inertial rotation of the barrel assembly from causing accidental firing.

The features, technical effects, and other advantages of the present disclosure will become apparent through further illustration below with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

To elucidate the technical solutions of the present disclosure or the prior art, the drawings used in describing the embodiments of the present disclosure or the prior art will be briefly introduced below. It is apparent that the drawings as described only relate to some embodiments of the present disclosure. To those skilled in the art, other drawings may be derived based on these drawings without exercise of inventive work, wherein:

FIG. 1 shows a cross-sectional structural schematic diagram of a multi-barrel rotary toy machine gun powered by compressed liquefied gas according to the present disclosure;

FIG. 2 is an enlarged view of part A in FIG. 1.

FIG. 3 is an enlarged view of part B in FIG. 1.

FIG. 4 shows an exploded view of a multi-barrel rotary toy machine gun powered by compressed liquefied gas according to the present disclosure;

Reference Numerals: 1 Grip Assembly 11 Safety Key 12 Trigger 13 Front housing 14 Rear Housing 15 Gas Valve 16 Microswitch 17 Gas-Guide Tube 18 Gas Nozzle 2 Gun body assembly 20 Driving Device 201 Motor Bushing 202 Driving Motor 203 Motor Fixing Base 204 Driving Gear 205 Bushing Fixing Base 21 Firing Device 211 Stationary Cylinder 212 Sealing Disc 213 Sealing Ring 214 Cam Disc 2141 Spiral Groove 215 Barrel Fixing Base 2151 Push Rod 2152 Positioning Block 2153 Inner Bearing 2154 Guide Groove 2155 Ball Entrance 2156 Stirring Rod 216 Rotary Cylinder 217 Magazine Fixing Frame 2171 Outer Bearing 2172 Stop Bolt 2173 Connection Bolt 2174 Set Screw 218 Connecting Disc 219 Chuck 22 Lifting Yoke 23 Sling Swivel 24 Gas Storage Device 241 Gasification Chamber 242 Cylinder Cover 243 Regulating Valve 3 Barrel Assembly 31 Barrel 32 Barrel Bushing Loading Entrance 4 Magazine Assembly 40 Mechanism 401 Sealing Cover 402 Connecting Cylinder 403 Abutting Spring 404 Push Block 41 Magazine 5 BB Balls

DETAILED DESCRIPTION OF EMBODIMENTS

Hereinafter, the technical solution of the present disclosure will be described in a clear and complete manner with reference to the accompanying drawings; it is apparent that the embodiments described here are part of the embodiments of the present disclosure, not all of them. All other embodiments obtained by those skilled in the art without exercise of inventive work based on the examples in the embodiments all fall within the protection scope of the present disclosure.

In the description of the present disclosure, it needs to be understood that the oriental or positional relationships indicated by the terms “front/back,” “upper/lower,” “left/right,” and “inner/outer,” etc. are indications of oriental and positional relationships based on the drawings, which are intended only for facilitating or simplifying description of the present disclosure, not for indicating or implying that the devices or elements have to possess such specific orientations and have to be configured and operated with such specific orientations; therefore, they should not be understood as limitations to the present disclosure. Besides, the terms “first,” “second” and “third” are only used for descriptive purposes, which shall not be understood as indicating or implying a relative importance.

In the present disclosure, unless otherwise explicitly provided and limited, the terms such as “mount,” “connected,” “connection” should be understood in a broader sense, which, for example, may refer to a fixed connection, a detachable connection, or an integral connection; they may also refer to a mechanical connection or an electrical connection; they may refer to a direct connection or an indirect connection via an intermediate medium; they may also refer to a communication between the insides of two elements. To a person of normal skill in the art, specific meanings of the above terms in the present disclosure may be understood based on specific situations.

FIGS. 1˜4 respectively show relevant cross-sectional structural schematic diagrams, local enlarged views, and exploded views of an overall structure diagram of a multi-barrel rotary toy machine gun powered by compressed liquefied gas according to the present disclosure. For the ease of description, the expressions “left,” “right,” “upper,” and “lower” stated herein are consistent with the left, right, upper, and lower directions indicated in the drawings, but have no limiting role to the structure of the present disclosure.

An embodiment of the present disclosure provides a multi-barrel rotary toy machine gun powered by compressed liquefied gas, comprising a grip assembly 1, a gun body assembly 2, and a barrel assembly 3, which are successively connected, wherein a magazine assembly 14 for loading a plurality of BB balls 5 and continuously pushing the BB balls 5 into the gun body assembly 2 via a spring is inserted inwardly along an entrance of the gun body assembly 3. To those skilled in the art, it is easy to understand that the spring may be replaced by other elastic thrusting devices, which are required only to ensure that the BB balls may reliably enter the magazine.

Specifically, in this embodiment, the magazine assembly 4 comprises a magazine 41 and a loading entrance mechanism 40 disposed at an entrance of the magazine 41. The magazine 41 is disposed in parallel to the gun body assembly 2; the magazine 41 has a cylindrical shape, and its internal space may accommodate a plurality of BB balls 5 (over 2,000 balls). The loading entrance mechanism 40, which is embedded at the entrance of the magazine 41, may continuously push the BB balls 5 loaded in the magazine 41 towards the grip assembly 1. That is, it may continuously push the BB balls 5 into the gun body assembly 2.

The barrel assembly 3 includes four barrels 31. Each barrel 31 is fitted with a barrel bushing 32, wherein each barrel 31 is concentrically arranged with the corresponding barrel bushing 32. A connecting disc 218 and a chuck 219, which are configured for fixing the barrel bushing, are arranged on the barrel assembly 3 proximal to the entrance. Correspondingly, through holes for the barrel bushings to penetrate through are provided on the connecting disc 218 and the chuck 219, and the barrel bushing is sidewise radially locked via a small screw. In this way, the straightness of barrel bushings and the parallelism between respective barrel bushings are guaranteed.

Via the barrels 31, the BB balls 5 ejected out from inside the magazine assembly 4 may be fired one by one along a rectilinear direction. The respective barrels 31 are annularly arranged with even internals along a centerline of the gun body assembly 2; respective barrels 31 successively fire the BB balls 5; the centerline of the magazine 41 coincides with the centerline of the gun assembly 2. In other words, the magazine 41 is disposed at the central position encircled by respective barrels 31. The magazine 41 of the multi-barrel rotary toy machine gun powered by the compressed liquefied gas is completely front-mounted, which is disposed in parallel with the barrels 31 and at a central position encircled by respective barrels 31. In other words, the central position encircled by the respective barrels 31 is arranged as the magazine 41 for loading the BB balls 5; in this way, the space of the magazine 41 may increase, which then increases the amount of loaded balls. Meanwhile, by providing the loading entrance mechanism 40 inside the magazine 41 and continuously pushing the BB balls 5 via the elastic thrusting mechanism, it may be guaranteed that the BB balls 5 reliably enter the gun body assembly 2 via the magazine 41. During the actual use process, the BB balls 5 may be first loaded into the magazine 41, and then the loading entrance mechanism 40 is mounted inside the magazine 41.

Although the barrel assembly 3 comprises four barrels 31 in the preferred embodiment, those skilled in the art easily understand that the number of the barrels 31 may be reasonably chosen based on the actual needs and the same working principle, and meanwhile the position of the magazine 41 should be adjusted. For example, the barrel assembly 3 may include two barrels, three barrels, five barrels, six barrels, and more barrels, etc., all of which fall within the protection scope of the present disclosure.

In another embodiment, the magazine 41 may be arranged with an irregular cross-section shape, wherein the barrels 31 are wrapped in a mounting hole, which is formed by the magazine 41, for mounting the barrels 31. In other words, the barrel bushing is integrally arranged with the magazine 41. As such, the mounting is more convenient.

Specifically, as shown in FIG. 2, the loading entrance mechanism 40 in this embodiment comprises a sealing cover 401, a connecting cylinder 402, an abutting spring 403, and a push block 404, which are successively arranged inwardly along the entrance of the barrel 31. The abutting spring 403 is arranged between the connecting cylinder 402 and the push block 404. The abutting spring 403 is a cylindrical spring; the push block 404 has a drum shape, with one end being sealed and provided with a fixed threaded hole, and the other end being open; one end of the connecting cylinder 402 has a round-platform shape, inwardly recessed into a hole, and the other end thereof has a boss; besides, a through hole is provided at the bottom of the round platform. One end of the abutting spring 403 is securely connected to a thread hole on the push block 404 via a screw, and the other end of the abutting spring 403 is sleeved to the outer perimeter surface of the round platform of the connecting cylinder 402 to press against the collecting cylinder 402. One end of the push block 404 distant from the abutting spring 403 is sealed and presses against the BB balls 5 loaded in the magazine 41; an outer perimeter of the sealing cover 401 has an external thread, and an inner wall of the corresponding magazine 41 is provided with an inner thread. The sealing cover 401 may be fixedly connected at the entrance of the magazine 41 via a threaded connection. Meanwhile, one end of the connecting cylinder 402 distant from the abutting spring 403 may pass through a through hole at the bottom of the round platform via a screw and then be fixedly connected with the sealing cover 401. Of course, it may be understood that the connecting cylinder 402 and the sealing cover 401 are not fixedly connected, where it is also feasible to directly press the connecting cylinder 402 against the sealing cover 401.

Hereinafter, the assembling and mounting process and the working principle of the loading entrance mechanism 40 will be explained briefly with reference to FIG. 1 and FIG. 2.

First, one end of the abutting spring 403 is fixedly connected inside the push block 404 via a screw. Then, the connecting cylinder 402 is fixedly connected to the sealing cover 401. The push block is disposed in the magazine 41; the connecting cylinder 402 is inserted into the other end of the abutting spring 403; by screwing on the sealing cover 401, the abutting spring 403 is compressed to push the push block 404 to move towards the left; the sealing cover 401 is thread connected to entrance of the magazine 41. As such, mounting of the loading entrance mechanism 40 is completed.

During service, with decrease of the BB balls 5, because the position of the sealing cover 401 is fixed, the abutting spring 403 is deformed to be lifted up to continuously press against the push block 404 to move towards the left, as shown in FIG. 1; the push block 404 continuously moves towards the direction of the grip assembly 1 to thereby continuously press against the BB balls 5 to move towards the gun body assembly 2.

Preferably, in the technical solution above, the grip assembly 1, which is arranged upside down, comprises a front housing 13 and a rear housing 14 which are arranged in pair, the front housing 13 and the rear housing 14 being assembled to form a handle available for being gripped. A safety key 11 is provided at an outer side of the grip assembly 1, and a movable trigger 12 is provided at an inner side of the grip assembly 1. The safety key 11 and the trigger 12 are arranged in adjacency. By depressing the safety key 11, the locking state of the trigger 12 may be changed. Pulling the trigger may control the gun body assembly 2 to self-rotate. A micro switch 16 is disposed above the trigger 12; the micro switch 16 may control on-off of the power supply; a gas valve 15 is disposed under the trigger 12; two routes of airways form an airway loop with the gas valve 15 via two gas nozzles 18 and a gas-guide tube 17, wherein one end of the loop is for gas in, and the other end of the loop is for gas out. movement of the gas valve 15 may control on-off of the airway tubing. Under an unlocked circumstance, with pulling of the trigger 12, the position of the gas valve 15 may be moved, and meanwhile, the micro switch 16 is conducted, thereby simultaneously conducting the circuit and the airway tubing.

Because the trigger 12 is self-locked under a normal state, when firing, it is only needed to correctly grip the handle with a single hand to depress the safety key 11 to unlock the trigger 12, and then the trigger may be pulled to fire. When the hand leaves the handle, the safety key 11 is released and auto-reset to lock the trigger 12. As such, when firing, it is not required to open the safety key 11 in advance or manually reset the safety key 11 to lock the trigger 12; therefore, the toy machine gun according to the present disclosure may simplify the firing action and reduce accidental firing.

Preferably, in the technical solution above, as shown in FIG. 1, the gun body assembly 2 is provided with a gas storage device 24; the gas storage device 24 may supply an aerodynamic force to push the BB balls 5 out of the barrels 31. As shown in FIG. 1, the gas storage device 24 has a cylindrical shape, inside which is mounted a liquefied gas cylinder. A cylinder cover 242 is provided at the entrance of the gas storage device 24. The cylinder cover is hinged to a sidewall of the gas storage device 24 and may be secured at the entrance of the gas storage device 24 by a locking mechanism. A regulating valve 243 and a gas-guide tube 17 are provided at the entrance of the gas storage device 24; the airway tubing inside the assembly 1 may communicate with the liquefied gas cylinder via the gas-guide tube 17. With the regulating valve 243, a flow of the liquefied gas released by the liquefied gas cylinder may be controlled, thereby regulating the force of firing the BB balls.

A tail of the gun assembly 2 is encircled to form a gasification chamber 241. The gasification chamber 241 may gasify the liquefied gas in the liquefied gas cylinder. The liquefied gas cylinder communicates with the gasification chamber 241 via an airway tubing; the gasification chamber 241 may further communicate with the barrel 31 via another airway tubing, thereby supplying compressed gas to extrude the BB balls out to be fired. Because the gasification chamber 241 is disposed at the tail of the gun body assembly 2, it may increase gasification space of the liquefied gas, thereby overcoming insufficient pressure of the liquefied gas during continuous firing.

Specifically, in the technical solution above, the gun body assembly 2 comprises a driving device 20 and a firing device 21. In this embodiment, the driving device 20 and the gas storage device 24 are both arranged in parallel at a lower part of the firing device 21. The driving device 20 may drive the barrel assembly 3 to self-rotate. The firing device 21 may push the BB balls in the magazine 41 into the gun body assembly 2 so as to cause the BB balls to make a rectilinear motion inside the barrel assembly 3 to the outside.

The firing device 21 comprises a stationary cylinder 211 of a cylindrical shape and a rotary cylinder 216 disposed inside the stationary cylinder 211. As shown in FIGS. 1 and 4, a sling swivel 23 is securely connected to a side edge of the rotary cylinder 216; a sling may be attached to the sling swivel 23 to facilitate carrying of the toy machine gun. The rotary cylinder 216 is sleeved with an outer bearing 2171 so as to be rotatably connected with the stationary cylinder 211. A magazine fixing frame 217 and a barrel fixing base 215, which are configured for fixing the barrel assembly 3, are respectively connected to two ends of the rotary cylinder 216. In other words, the rotary cylinder 216 is disposed between the magazine fixing frame 217 and the barrel fixing base 215. An outer gear is disposed on an outer perimeter surface of the rotary cylinder 216 proximal to an end portion of the magazine fixing frame 217. The magazine fixing frame 217 is securely connected with the barrel fixing base 215 via a connecting screw 2173 so as to tightly clamp the rotary cylinder 216. By penetrating a small screw through a side face of the rotary cylinder 216, the rotary cylinder 216 is securely connected with the barrel fixing base 215. By screwing a stop screw 2172 sidewise, the barrel bushing 32 may be secured to the magazine fixing frame 217; by screwing a set screw 2174 sidewise, the magazine 41 may be securely connected to the magazine fixing frame 217. The other end of the barrel fixing base 215 is in pressing-against connection with a cam disc 214; one end face of the cam disc 214 is inwardly recessed to form a spiral groove 2141 fitted to the barrel assembly 3; the other end face of the cam disc is in hermetic connection with a sealing disc 212; a sealing ring 213 is pressed between the cam disc 214 and the sealing disc 212 to hermetically form a gasification chamber 241.

Guide grooves 2145 fitted with respective barrels 31 are provided on the barrel fixing base 215, and a ball entrance port 2155 is disposed perpendicular to respective guide grooves 2154. Each guide groove 2154 corresponds to a barrel 31. A push rod 2151 is pressed into the guide groove 2154 via a spring and a boss, wherein the push rod 2151 is hollow and provided with a through hole. The push rod 2151 may rectilinearly inside the guide groove 2154. The BB balls 5 enter the guide groove 2154 via the ball entrance port 2155; with transverse movement of the push rod 2151, the BB balls 5 may be pushed into the barrel 31; via the through hole of the push rod 2151, the compressed gas releases a dynamic force to strike the BB balls to be fired out.

As shown in FIG. 3, the barrel fixing base 215 is hollow and has an inverted conic shape; a positioning block 2152 fixes an inner bearing 2153 to an inner wall of the barrel fixing base 215; the barrel fixing base 215 may rotate relative to the positioning block 2152. A stirring rod 2156 is transversely inserted into the positioning block 2152 to stir the BB balls 5 in the magazine 41, which facilitates the BB balls 5 to enter the ball entrance port 2155.

Specifically, the driving device 20 comprises a driving motor 202, a motor bushing 201, a bushing fixing base 205, a motor fixing base 203, and a driving gear 204. The driving motor 202 may supply a power source for driving the barrel assembly 3 to self-rotate. The driving motor 202 is disposed in the motor bushing 201; the motor fixing base 203 is sidewise inserted into the motor bushing 201 so as to be fixedly connected to the driving motor 202; the driving gear 204 is connected on an output shaft of the driving motor 202; the gear is partially exposed, such that the motor bushing 201 is engaged with the rotary cylinder 216 inside the gun body assembly 2 to thereby drive the barrel assembly 3 to self-rotate. The trigger 12 may control start/stop of the motor by triggering the micro switch 16.

Hereinafter, the connection relationship and working principle of the airway tubing in the embodiment will be illustrated with reference to FIGS. 1, 3 and 4.

The liquefied gas cylinder inside the gas storage device 24 is connected to the gasification chamber 241 via the regulating valve 243 and the gas-guide tube 17; the liquefied gas enters the gasification chamber 241 so as to be sufficiently gasified. The gasification chamber 241 has an exit which is connected to a gas valve 15 located at the grip assembly 1 via a gas-guide tube 17 and a gas nozzle 18; with movement of the gas valve 15, another gas-guide tube 17 may communicate with a gas exit port at the highest position of the cam disc 214. When the barrel fixing base 215 rotates such that one guide groove 2154 just faces the gas exit port at the highest position of the cam disc 214, the compressed gas immediately enters the guide groove 2154, then passes through the through hole on the push rod 2151 to directly strike the BB ball 5 ejected by the push rod 2151 into the barrel 31 to be thereby fired out.

Preferably, in the technical solution above, a lifting yoke 22 is provided at a middle portion of the barrel assembly 3; the lifting yoke 22 is usually used in cooperation with the grip assembly 1, wherein the grip assembly 1 is manipulated by one hand to depress the safety key 11 and the trigger 12, while the other hand is for lifting the lifting yoke 22. It is more convenient, with less effort, to manipulate with two hands. The lifting yoke 22 is disposed at an upper portion of the barrel assembly 3, which is bent into a “

(gate)” shape by a round stick, two ends of which extend vertically along a same direction so as to be securely connected to side portions of the stationary cylinder 211 in the gun body assembly 2.

Furthermore, an overload protection circuit is mounted in the driving motor 202; power supply will be interrupted in the case of motor overload; and the load of the motor will restore normal after power interruption. Additionally, a dynamic braking circuit is further mounted, which effectuates an emergent braking after the motor stops, thereby preventing inertial rotation of the barrel assembly 3 from causing accidental firing.

Finally, the working principle of the multi-barrel rotary toy machine gun powered by compressed liquefied gas according to the present disclosure will be illustrated with reference to FIGS. 1˜4:

In the solution, a market-available standard liquefied gas cylinder for airsoft guns may be adopted to supply liquefied gas. In the industry of air guns and airsoft guns, a gas pressure potential energy is usually stored in a compressed carbon dioxide gas cylinder for direct use; or gas is inflated into a gas storage cavity inside the gun body or a fixed gas storage tank connected to the gun body by means of a hand pump, an air compressor, or a scuba tank. The liquefied gas from the liquefied gas cylinder enters the gasification chamber 241 via the gas-guide tube 17 and is then sufficiently gasified therein to serve as power for firing the BB balls 5; by depressing the safety key and pulling the trigger 12 by one hand, the gas valve 15 moves; meanwhile, the micro switch 16 is off; the airway tubing is conducted, and meanwhile the driving motor 202 starts. The driving motor 202 drives the barrel assembly 3 to rotate; when the barrel 31 rotates along the spiral groove 2141 till the horizontally highest position of the cam disc 214, the compressed air enters the barrel 31 via a hollow push rod 2151 to strike the BB ball 5, thereby completing a firing action of a single barrel 31. Meanwhile, in other guide groove 2154, the corresponding push rod 2151 retracts, and the BB ball 5 slides into the ball entrance 2155; with rotation of the barrel assembly 3, the push rod 2151 moves forwardly in the guide groove 2154 to push the BB ball 5 into the barrel 31; the compressed air enters the barrel 31 via the hollow push rod 2151 to strike the BB ball 5 to be fired; then, the push rod 2151 retracts again, so on and so forth. As such, when each barrel 31 rotates to the horizontally highest position of the cam disc 214, a BB ball 5 may be fired; by keeping pulling the trigger 12, the BB balls 5 may be continuously fired.

It needs to be noted that preferred embodiments have been provided in the description and the accompanying drawings of the present disclosure. However, the present disclosure may be implemented through different manners, not limited to the embodiments as described herein. These embodiments do not serve as extra limitations to the present disclosure, and these embodiments are provided to enable a more thorough and comprehensive understanding of the contents of the present disclosure. Moreover, the various technical features above may be further combined to form various kinds of embodiments not listed herein, and such formed embodiments should be deemed as falling into the scope of the present disclosure; further, to those of normal skill in the art, the embodiments above may be improved or altered, while all of such improvements and alterations shall fall within the scope of the appended claims of the present disclosure. 

I/We claim:
 1. A multi-barrel rotary toy machine gun powered by compressed liquefied gas, comprising a grip assembly (1), a gun body assembly (2), and a barrel assembly (3), which are successively connected, wherein a magazine assembly (4) for loading a plurality of BB balls (5) and continuously pushing the BB balls (5) into the gun body assembly (2) via an elastic thrusting device is inserted inwardly along an entrance of the gun body assembly (3).
 2. The multi-barrel rotary toy machine gun powered by compressed liquefied gas according to claim 1, wherein the magazine assembly (4) comprises a magazine (41) which may accommodate a plurality of BB balls (5) and is disposed parallel to the gun body assembly (2), and a loading entrance mechanism (40) which is embedded at an entrance of the magazine (41) and may continuously push the BB balls loaded in the magazine (41) towards the grip assembly (1).
 3. The multi-barrel rotary toy machine gun powered by compressed liquefied gas according to claim 2, wherein the loading entrance mechanism (40) comprises a sealing cover (401), a connecting cylinder (402), an abutting spring (403), and a push block (404), which are successively arranged inwardly along the entrance of the barrel assembly (3); the abutting spring (403) is disposed between the connecting cylinder (402) and the push block (404), one end of the abutting spring (403) pressing against the connecting cylinder (402), while the other end thereof being fixedly connected to the push block (404); one end, which is distant from the abutting spring (403), of the push block (404) presses against the BB balls loaded in the magazine (41); and the sealing cover (401) is fixedly connected at the entrance of the magazine (41) and abuts against or is connected to the end, which is distant from the abutting spring (403), of the connecting cylinder (402).
 4. The multi-barrel rotary toy machine gun powered by compressed liquefied gas according to claim 1, wherein the barrel assembly (3) comprises a plurality of barrels (31) which may fire, one by one in succession, the BB balls (5) ejected out from inside the magazine assembly (4) along a rectilinear direction; the barrels (31) are provided in four; the respective barrels (31) are arranged annularly along a centerline of the gun body assembly, a centerline of the magazine assembly (4) being arranged to coincide with the centerline of the gun body assembly (2).
 5. The multi-barrel rotary toy machine gun powered by compressed liquefied gas according to any one of claims 1˜3, wherein the grip assembly (1) is arranged upside down; on the outer side of the grip assembly (1) is provided a safety key (11) which may change a locked state of a trigger (12); the trigger (12) is movably disposed at an inner side of the grip assembly (1) to control self-rotation of the gun body assembly (2) and is arranged adjacent to the safety key (11).
 6. The multi-barrel rotary toy machine gun powered by compressed liquefied gas according to claim 5, wherein the gun body assembly (2) is provided with a gas storage device (24) which may supply an aerodynamic force to push the BB balls (5) out of the barrel assembly (3), wherein a liquefied gas cylinder is mounted in the gas storage device (24); a tail part of the gun body assembly (2) is encircled into a gasification chamber (241) which may gasify the liquefied gas in the liquefied gas cylinder, the liquefied gas cylinder being in communication the gasification chamber (241) via an airway tubing, and the gasification chamber (241) communicating with the barrel assembly (3) via the airway tubing.
 7. The multi-barrel rotary toy machine gun powered by compressed liquefied gas according to claim 6, wherein a lifting yoke (22) for being lifted and used in cooperation with the grip assembly (1) is provided at a middle position of the barrel assembly (33), the lifting yoke (22) being disposed at an upper portion the barrel assembly (3) and fixedly connected to a side portion of the gun body assembly (2).
 8. The multi-barrel rotary toy machine gun powered by compressed liquefied gas according to claim 6 or 7, wherein the gun body assembly (2) comprises a driving device (20) for driving the barrel assembly (3) to self-rotate and a firing device (21) configurable for pushing the BB balls (5) inside the magazine (41) into the gun body assembly (2) and causing the BB balls (5) to make a rectilinear motion inside the barrel assembly (3) to the outside, the driving device (20) and the firing device (21) being arranged adjacently in parallel.
 9. The multi-barrel rotary toy machine gun powered by compressed liquefied gas according to claim 8, wherein the driving device (20) comprises a driving motor (202) configurable for providing a power source for driving the barrel assembly (3) to self-rotate, a motor fixing base (203) for fixing the driving motor (202), and a driving gear (204) connected to an output shaft of the driving motor (202) and capable of driving the barrel assembly (3) to self-rotate, and start/stop of the driving motor (202) is controlled by a trigger (12) on the grip assembly (1).
 10. The multi-barrel rotary toy machine gun powered by compressed liquefied gas according to claim 9, wherein the firing device (21) comprises a cylindrical stationary cylinder (211), a rotating cylinder (216) disposed in the stationary cylinder (211) and engaged with the driving gear (204), and a magazine fixing frame (217) and a barrel fixing base (215) which are provided at two ends of the rotating cylinder (216), respectively, for fixing the barrel assembly (3); the other end of the barrel fixing base (215) is in pressing-against connection with a cam disc (214), one end face of the cam disc (214) is inwardly recessed with a spiral groove (2141) fitted to the barrel assembly (3), and the other end face of the cam disc (214) is in sealing connection with a sealing disc (212); the cam disc (214) and the sealing disc (212) are hermetic therebetween to form the gasification chamber (241). 